Anyone had this before?

I am getting a "camshaft ticking type noise" when driving. The noise is not apparent when stationary which leads me to believe it may be the gearbox. The noise is more prominent when pressure is put on the gear shift. I am aware of the problems with the older models but this my one is the C6 model which i am told is more reliable.

There are no problems with gear changes but i am preparing for the worst!